package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/**
 * @author chb
 * @date 2021/5/30 - 11:46
 * @ControllerAdvice
 * 集中处理所有异常
 *
 * @RestControllerAdvice
 * 相当于@ResponseBody+@ControllerAdvice
 *
 **/
@Slf4j
//@ResponseBody
//@ControllerAdvice(basePackages = "com.atguigu.gulimall.product.app")
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.app")
public class GulimallExceptionControllerAdvice {

    /**
     * @ExceptionHandler 告诉spring 我来处理异常
     * 处理Exception.class 这个类
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleVaildExceptin(MethodArgumentNotValidException e){
        log.error("数据校验出现问题{},异常类型{}",e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();

        Map<String,String> errorMap = new HashMap<>();
        bindingResult.getFieldErrors().forEach((item)->{
            String field = item.getField();
            String message = item.getDefaultMessage();
            errorMap.put(field,message);
        });
        return R.error(BizCodeEnum.VAILD_EXCEPTION.getCode(),BizCodeEnum.VAILD_EXCEPTION.getMessage())
                .put("data",errorMap);
    }

    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){

        log.error("错误：",throwable);

        return R.error(BizCodeEnum.UNKNOW_EXCEPTION.getCode(),BizCodeEnum.UNKNOW_EXCEPTION.getMessage());
    }
}
